Unconditional Delivery Listeners¶
The where clause
argument in the addUpdateListener
method is optional. When it is not provided, the real-time database will deliver any object which is being updated in the database's table:
var orderEventHandler = Backendless.Data.Of( "Order" ).RT();
orderEventHandler.AddUpdateListener( updatedOrder =>
{
Console.WriteLine( $"an Order object has been updated in the database. Object ID - {updatedOrder[ "objectId" ]}" );
} );
var orderEventHandler = Backendless.Data.Of<Order>().RT();
orderEventHandler.AddUpdateListener( updatedOrder =>
{
Console.WriteLine( $"an Order object has been updated in the database. Object ID - {updatedOrder.ObjectId}");
} );